Fuel Delivery
Carburetor
A carburetor meters fuel into the air entering the engine on vehicles built before fuel injection. We list 37 carburetors from $130 to $626 for 1967-1987 vehicles, led by Edelbrock and Uremco along with Holley, with fits for the Ford F250, F150, Chevrolet Corvette and Camaro.
Shop carburetor by vehicle
Signs your carburetor needs attention
Common symptoms include hard starting, stalling when the engine is cold or at idle, a rough or hunting idle, hesitation when you press the throttle, black smoke or a strong fuel smell from running rich, and fuel leaking or dripping from the body. Many of these can come from a sticking choke, a bad float setting, a vacuum leak or worn gaskets rather than the carburetor itself. If the casting is warped, the throttle shafts are worn loose or it has been rebuilt many times, a replacement unit is often the simpler fix.
Matching CFM, flange and choke
Carburetors here range from 600 to 770 CFM. The right size depends on engine displacement, rpm range and use, so follow the maker's sizing guidance for your engine rather than going as large as possible. The flange must match your intake manifold: square bore and spread bore are different patterns.
Choke options include electric and manual. Check whether your vehicle needs a unit with or without EGR provisions, and whether your throttle linkage, kickdown cable and vacuum lines will connect to the new body.
Installation tips
Work with the engine cold, disconnect the battery and keep sparks and flames away from the area. Label vacuum lines before removing the old unit and use a new base gasket. After installation, set the idle speed and mixture screws as the instructions describe and check the choke operation. Pick your year, make and model to see listed fitment, and compare your old carburetor's model number when you are unsure what the engine originally used.
Carburetor questions
What CFM carburetor do I need for my engine?
It depends on displacement, the rpm range you drive in and how the engine is built. A carburetor that is too large can make low-speed response worse. Use the carburetor maker's sizing chart and the fitment notes for your vehicle.
What is the difference between square bore and spread bore?
They describe the throttle bore layout on the base of the carburetor. A square bore has four similar bores, while a spread bore has small primaries and large secondaries. Your intake manifold flange must match, or you will need an adapter.
Electric or manual choke, which should I choose?
An electric choke opens on its own as it warms and is easier day to day. A manual choke uses a cable you operate from the cab and gives you direct control. Choose based on what your vehicle has wired or plumbed.